Drag or tensioning motion



J. H. MARSH DRAG QR 'EENSIONING MOTION FiledJanQ 24, 1924 2 Sheets-Sheet 1 Way.

Get. 6, 1925- J. H. MARSH DRAG on 'rsusmuma MOTION Filed Jan. 24, 1924 2 Sheets-Sheet 2 Y may."

Patented Oct. 6, 1925.

Jonnnnnn MaR-sn, or mauon ns'rna, NGLAND. j

mane on 'rENsIonrnG Mo'rIo'N T0 all whom itmaycanoem:

'Be it'known' thatI, JoHNHENRY MARSH,

a subject ofthe King of GreattBritainand I Ireland, and a resident of Swinton, Manchester, inw'the' county of Lancaster, Eng-. land, have invented a new or Improved Drag or Tensioning Motion, of which the.

following is alspecification. ,7 V

:This invention .relates to means for applying tension to textile yarns asth ey are being wound fromonefwinding point to another, and is particularly applicable to what is known as a drag motion injtextile winding machines which drag motion has for object the applying of tension to cotton or other yarn as itis being wound, say from.

acop, cheese, cone or: the like yarn package toa winding bobbin. or the like. It has for object a means for ensuring that the exact tensionrequired maybe put upon theyarn being Wound, according to the counts of yarn being handled, with means for easilyand accurately varying the tension; furthen-feature otthe invention is that'in a winding on analogous machine all theidragli motionsscomprised in the machine-being one dragmotionfor each winding point-TI. may-(be simultaneously: and accurately ad-;

justedbycohe movement.

mount a drag or tension wheel on the wind ing frame between the windingoff point of athread; and which point may be accop,

cheese'ibobbin or the like ofy'armfand the winding on point which: may "be a bobbinor thedike, itlie thread passing completely around the drag wheel in its passage be tween these two points; The rotation oftheia drag wheeloperates a. centrifugal governor.

which, ata predetermined speed of the wheel, bringsinto actiona retarding brake to retard the drag'wheel and thus put tension on the 'thread passing. therearoun'd.

The retardingbrake is screw adjustable tovary the time at' which it? may be brought into action for this purpose, and as are sult any desiredtensionmay :be put upon. the yarn threadbeing w'ound, the tension depending upon the difference between the" peripheral speed of the dragwheel and thelinear speed of the thread in its passage from one point to another. Toadjust all the brake actions of one side of a frame simultaneously, a shaft is employed bearing spur Wheels each of which meshes with a ings viceziora'drag motion, :rv- V IIl -W1I1Cl1I1g :andrlike framesa large num-i'i berlof "yarn threads are invariably, wound, I simult,aneously, and the apparatus .:as' no'w 'to .be' described and illustrated is for-Jone thread only, the tensioningy device for thefl other. threads being off course. identical Figure 1 paratus,imounted within'a casing; i ;Figure' 2"is a detail view'in elevation of centrifugal governing means, specially arranged in relation to thedra-gi wheel. shaft: forua' purpose hereinafter explainedjs- --Figure 3' is aiplan of the casing and wheel of Figure 1;-"and Figure fl is a side =elevation thereofyi j gITigure- 5 is "an end view of means for ad I justing the retarding brakes of'a plurality ottens'ioni'ng devices, in one i-winding frame,

simultaneously Figure 6 a front elevation of "part of such means, and:" i i j 1 ax;-

- Figure 7 shows diagrammatically: a meansj for employing a plurality of dragkyvheels I I a i foro'ne yarn thread, one of the'wheels be In carrying :the invention into effect I 1 ing governed according to this invention. fg'Referring to the drawings, 'Figures' l to 4, 7 isa rnetal casing formed with anexten sion8' and having formed exterio-rl'y. thereofthe {rib-or strake' 9v which is tapped j at; 110 5 torec'eivea screw for securing inplace a lid';'orco ver- 11- shown as broken away) for the I casing. Suitable means may be pro?" videdat the upper end of the casing'to re-' ceive anotheryscrew for a similar purpose; 12 isfa drag wheel forined'with the flanges 13,14, and 15,16, 17, are guideeyos forthe yarn thread X, which passes upwards "from E a wind-in'g -ofl7 point below the casingthrough the'guides l5, 16, around the drag" wheel periphery as shown, and through the 11 guide-[17 to the winding on, point'above'the drag 'wheel; The guide 17 i's-in' the form] of a drop pin fitting within an orifice in the projection 18 and in thetoplcasing j'i for-a purpose hereinafter described, and it is suppor ed in position as shown in Figure 1 by the tension of the yarn thread The 5 wheel 12 is cylindrical and preferably hollow, having a closed top to which is secured in any convenient manner the end of a shaft toothedi wheel which serves 19 the lower extremity of which is journalled in a footstep hearing at the bottom of the casin 7. The strengthening rib 9 allows of a deep bearing being formed for this purpose. On the shaft 19 are pinned the collars 20 and 21, to the latter being pinned or otherwise secured the extremities of governor arms 22 formed of spring steel and bearing the hemispherical governor balls 23. The other extremities of the governor arms 22 are pinned to a collar 24 freely slidably on the shaft 19. The shaft 19 and the governor elements, with the slidil'lg collar 24, are arranged as now to be de-" scribed with reference to Figure 2; Upon the shaft 19 is fitted a circular disc 25 having an arm 26 longitudinal to the said shaft. A- furthr and similar arm may if desired be formed with the disc 25 but on the other side of the shaft 19 (not seen in the figure) The collar 24 is provided with the tubular extension '27,- which is slotted at 28 to allow the arm 26 to make an easy sliding fit within the slot: Thus as the shaft 19 rotates and the governor .balls fly outwards, the collar 24 slides up the shaft 19 and the arm 26, or arms where more than one are employed, ensure that there will be no looseness or irregular torque or twist on the governor arms 22, the collar 24 being rotated directly by the shaft 19 whilst at the same time being freely slidable thereon. V

The collar 24 has attached thereto 01" formed therewith the disc 29 (Figures 1 and 2,) serving as a brake disc, this disc being therefore movable along the shaft 19 in proportion to the centrifugal force exerted on t-heballs 23. Referring again to Figure 1,

30 isa. brake arm having a shank or spindle 31 which passes through the extension 8 of the casing 7 and terminates in a threaded end,32, on which is fitted the contrate wheel 33, having collar=34, the wheeland collar being tapped for the purpose. A guide pin 31 is fitted to member 31 and slides in a slot 31 in extension 8. A helical spring 35 surrounds the spindle 31 and abuts against the floor ofth'e casing 7 and against the thick ened portion 36 of the brake arm. The latter bears a brake pad 37 which maybe of any known frictional material, and which may be fitted in place in anyknown mannen It may for instance be fitted in place by the extremity of brake arm 30 being bent around it to hold it in position. 5

The general operation of the apparatus will now be understoo'd. The yarn thread X passing through guides 15 and 16 and aroundihe drag wheel 12 and through the guide 17 passes to the winding on point at a high linear speed, and thus rotates the drag wheel at a proportionate speed. Through the apparatus describedthe brake disc 29 begins to slide up the shaft 19 until itcomes into contact with the brake pad 37, the rotation of the drag wheel being then retarded and its rotary speed settling down to a. speed which depends upon the steady pressure exerted by the brake pad 37 upon disc 29 which transmits the retardation to the shaft 19 and hence to drag wheel 12. The rotary speed of the drag wheel thus becoming less than the linear speed of the yarn thread, tension is: put upon the said thread by the retarded drag wheel 12. To obtain a variation of this difference for different counts of yarn, the brake pad 37 is brought nearer to or drawn further from the normal position of the brake disc 29 by rotating the regulator wheel 33 as will be understood, the spring 35 ensuring that the brake arm 11 remains in constant position wherever adjusted. The. dependent limb 38 may be formed with the brake arm 30, to limit its down-ward movement,- but this may be omitted, or shortened to widen the limits within which the brake may be adjusted.

The guide 17 as already stated is a drop pin, similar to those already in usein v'ari ous textile apparatus, and a wire contact stop 39 is provided, one end being cranked as shown in Figure 1 and the other encircling the shaft 19 between the collars 20 and 21, making sufficient frictional contact with these collars to rotate with them. Should the thread a: break or slacken during the winding operation the guide pin 17 will drop within the casing, the slackenend thread no longer supporting it,- and the rotating stop arm 39 will make contact with it. Friction is thus applied to the collars 20 and 21, such friction being suflicient to ensure that the rotation of the drag wheel will cease almost immediately the thread 00 ceases its pull upon such wheel.

Figure 3 shows a preferred method of fixing the guide 16 to the top of easing 7. The guide is formed of wire bent as shown, and the screw 40 screws down upon it to hold it in position; The guide 15 shown in this and other figures may have one extreinity threaded to fit in a tapped hole in a lug or the like at the top of casing 7-, thus serving both as a guide and as a means for securing the lid or cover, previously referred to, upon the said casing. v

In Figure 1 and Figures 5 and 6 is shown fragi'nentarily a simple method whereby the brake arms of all the 'tensioning motions at one side of a frame may be simultaneously adjusted. The regulator wheel 33 is formed with teeth 41, which engage with teeth of a spur wheel 42 pinned or keyed to a shaft 43 which extends the whole length of one side of the winding frame and is mounted in appropriate hearings to rotatetherein. At the end of the shaft 43 is fitted the crank 44 with handle 45. Thus, angular motion of the shaft through crank 44 will operate the regulator wheel 33 of each tensioning device simultaneously, and the particular relation of the teeth of each spur wheel 42 to the teeth of a regulator wheel 33 will ensure that expansion or contraction of the shaft 13 due to changes in temperature will not affect the ratio of any wheel 42 and its regulator wheel 33.

In Figure 7 is shown diagrammatic-ally a method whereby the thread a? may make contact with a greater surface of drag wheel. 12 is the drag wheel having fitted thereto the regulating motions hereinbefore described, and 46 and 47 are further similar wheels, mounted on vertical shafts in bearings on the frame behind the wheel 12, the three wheels being connected by spur gearing borne on their shafts; or the lower flange of a drag wheel (indicated at 14 in the previous drawings Figures 1 and 2) may be formed with teeth for this purpose. The yarn thread 50 may be led around the wheels in contact with their peripheries in the manner most suitable to give the desired surface contact therewith, any additional yarn guides required being provided.

The casing 7 may be mounted on a winding frame in any convenient manner. In Figure 4 is shown abracket 18 attached to casing 7 with an orifice 4:9 to allow of the bracket being fitted upon'a pin or the like on the frame, a set screw 50 holding it in position.

The various parts of the apparatus may be of suitable metal. The guides 15, 16, 17, as before stated may be of wire; the casing 7 may be of ordinary metal galvanized, or be of non-corrodible metal, and the drag wheel or drag Wheels may be of non-corrodible metal.

The details given above may be varied within wide limits without departing from the spirit of my invention. The arrangement described of the centrifugal motion and of a brake pad to come into operation at any predetermined time as a result of such centrifugal motion imparted by the yarn thread to a drag wheel around which it passes can be varied considerably by any person skilled in the mechanical arts.

1. Means for applying tension to a yarn thread as it passes from a winding off point to a windingon point, comprising a drag wheel around which the thread passes and whichwheel is rotated by the thread, centrifugal means operated by the rotation of the drag wheel to bring into operation at a predetermined speed of the latter retarding means for such wheel, and variable means for determining the speed point of the said drag wheel at which point the retarding means come into operation.

2. In means for applying tension. to a yarn thread as claimed in claim 1, retarding means for the drag Wheel, comprising a centrifugal governor operated by the shaft on which the dra wheel is mounted, a brake disc rotatable with the shaft but slidable thereon and connected to the governor arms, a retarding brake pad adapted to make contact with the sliding disc, and means for varying the normal distance between the slidable brake disc and the brake pad, for the purpose hereinbefore set forth.

3. In combination with means for a-p lying tension to a yarn thread as claimed in claim 1, guides for the yarn one of such guides being a drop pin normally sustained by the yarn thread and adapted to fall into the path of an arm on the drag wheel shaft, for the purpose hereinbefore set forth.

4. In combinationwith the means for applying tension to a yarn thread as claimed in claim 1, further drag wheels adjacent to the drag wheel of the apparatus, bearings for such ancillary drag wheels, and means for rotating the said ancillary drag wheels from the main drag wheel, substantially as hereinbefore set forth.

5. For use with aplurality of yarn thread tensioning means constructed as claimed in claim 1, a regulator wheel fitted on-the threaded end of a brake member in each tensioning device and which brake member is adapted to come into contact with a disc slidable under the action of the centrifugal means operated by the drag Wheel of such device, a rotatable shaft extending the length of a frame in which the plurality of tensioning devices is mounted, and toothed wheels mounted on such shaft, each such toothed wheel being in mesh with a regulator wheel, for the purpose hereinbefore set forth.

In testimony whereof I have hereunto set my hand.

JOHN HENRY MARSH. 

